./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ............................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:32:48,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:48,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:48,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:48,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:48,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:48,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:48,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:48,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:48,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:48,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:48,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:48,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:48,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:48,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:48,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:48,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:48,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:48,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:48,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:48,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:48,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:48,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:48,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:48,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:48,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:48,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:48,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:48,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:48,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:48,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:48,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:48,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:48,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:48,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:48,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:48,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:48,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:48,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:48,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:48,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:48,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:32:48,845 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:48,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:48,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:48,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:48,849 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:48,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:48,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:48,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:32:48,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:48,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:48,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:48,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:48,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:48,852 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:48,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:48,853 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:48,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:48,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:48,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:48,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:48,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:48,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:48,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:48,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:48,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:48,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:32:48,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:32:48,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:48,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:48,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-10-20 00:32:49,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:49,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:49,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:49,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:49,082 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:49,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-10-20 00:32:49,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/067546e01/87f1954bc5144a639413c4e528261ab1/FLAGbe105c5d1 [2020-10-20 00:32:49,660 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:49,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-10-20 00:32:49,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/067546e01/87f1954bc5144a639413c4e528261ab1/FLAGbe105c5d1 [2020-10-20 00:32:50,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/067546e01/87f1954bc5144a639413c4e528261ab1 [2020-10-20 00:32:50,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:50,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:50,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:50,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:50,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:50,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:50" (1/1) ... [2020-10-20 00:32:50,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a24801a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50, skipping insertion in model container [2020-10-20 00:32:50,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:50" (1/1) ... [2020-10-20 00:32:50,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:50,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:50,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:50,364 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:50,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:50,421 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:50,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50 WrapperNode [2020-10-20 00:32:50,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:50,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:50,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:50,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:50,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50" (1/1) ... [2020-10-20 00:32:50,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50" (1/1) ... [2020-10-20 00:32:50,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:50,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:50,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:50,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:50,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50" (1/1) ... [2020-10-20 00:32:50,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50" (1/1) ... [2020-10-20 00:32:50,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50" (1/1) ... [2020-10-20 00:32:50,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50" (1/1) ... [2020-10-20 00:32:50,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50" (1/1) ... [2020-10-20 00:32:50,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50" (1/1) ... [2020-10-20 00:32:50,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50" (1/1) ... [2020-10-20 00:32:50,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:50,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:50,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:50,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:50,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:32:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:32:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:32:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:32:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:32:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:51,046 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:51,046 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:32:51,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:51 BoogieIcfgContainer [2020-10-20 00:32:51,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:51,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:51,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:51,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:51,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:50" (1/3) ... [2020-10-20 00:32:51,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3885b645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:51, skipping insertion in model container [2020-10-20 00:32:51,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:50" (2/3) ... [2020-10-20 00:32:51,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3885b645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:51, skipping insertion in model container [2020-10-20 00:32:51,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:51" (3/3) ... [2020-10-20 00:32:51,056 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-10-20 00:32:51,071 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:51,078 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:51,092 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:51,117 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:51,117 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:51,117 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:51,118 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:51,118 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:51,118 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:51,118 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:51,118 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:51,137 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-20 00:32:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:32:51,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:51,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:51,147 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:51,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:51,153 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-10-20 00:32:51,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:51,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685405581] [2020-10-20 00:32:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:51,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685405581] [2020-10-20 00:32:51,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:51,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:32:51,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412472159] [2020-10-20 00:32:51,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:51,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:32:51,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:51,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:51,342 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-20 00:32:51,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:51,367 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-10-20 00:32:51,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:51,369 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-20 00:32:51,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:51,381 INFO L225 Difference]: With dead ends: 53 [2020-10-20 00:32:51,381 INFO L226 Difference]: Without dead ends: 24 [2020-10-20 00:32:51,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:51,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-20 00:32:51,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-20 00:32:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 00:32:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-20 00:32:51,429 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-10-20 00:32:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:51,430 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-20 00:32:51,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-20 00:32:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:32:51,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:51,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:51,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:32:51,432 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:51,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:51,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-10-20 00:32:51,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:51,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069972674] [2020-10-20 00:32:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:51,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:51,714 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:51,770 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:32:51,771 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:32:51,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:32:51,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:51 BoogieIcfgContainer [2020-10-20 00:32:51,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:51,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:51,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:51,808 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:51,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:51" (3/4) ... [2020-10-20 00:32:51,813 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:32:51,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:51,816 INFO L168 Benchmark]: Toolchain (without parser) took 1734.98 ms. Allocated memory was 40.4 MB in the beginning and 44.6 MB in the end (delta: 4.2 MB). Free memory was 17.5 MB in the beginning and 16.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:51,817 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 30.9 MB. Free memory was 6.3 MB in the beginning and 6.3 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:51,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.86 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 16.7 MB in the beginning and 15.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:51,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.30 ms. Allocated memory is still 41.4 MB. Free memory was 15.5 MB in the beginning and 13.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:51,820 INFO L168 Benchmark]: Boogie Preprocessor took 39.37 ms. Allocated memory is still 41.4 MB. Free memory was 13.3 MB in the beginning and 11.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:51,821 INFO L168 Benchmark]: RCFGBuilder took 532.58 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 11.3 MB in the beginning and 18.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:51,822 INFO L168 Benchmark]: TraceAbstraction took 758.27 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 17.9 MB in the beginning and 16.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:51,823 INFO L168 Benchmark]: Witness Printer took 5.73 ms. Allocated memory is still 44.6 MB. Free memory was 16.3 MB in the beginning and 16.0 MB in the end (delta: 296.2 kB). Peak memory consumption was 296.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:51,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 30.9 MB. Free memory was 6.3 MB in the beginning and 6.3 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 335.86 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 16.7 MB in the beginning and 15.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 52.30 ms. Allocated memory is still 41.4 MB. Free memory was 15.5 MB in the beginning and 13.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 39.37 ms. Allocated memory is still 41.4 MB. Free memory was 13.3 MB in the beginning and 11.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 532.58 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 11.3 MB in the beginning and 18.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 758.27 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 17.9 MB in the beginning and 16.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * Witness Printer took 5.73 ms. Allocated memory is still 44.6 MB. Free memory was 16.3 MB in the beginning and 16.0 MB in the end (delta: 296.2 kB). Peak memory consumption was 296.2 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:32:54,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:54,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:54,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:54,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:54,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:54,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:54,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:54,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:54,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:54,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:54,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:54,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:54,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:54,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:54,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:54,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:54,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:54,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:54,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:54,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:54,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:54,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:54,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:54,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:54,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:54,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:54,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:54,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:54,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:54,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:54,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:54,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:54,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:54,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:54,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:54,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:54,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:54,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:54,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:54,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:54,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:32:54,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:54,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:54,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:54,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:54,181 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:54,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:54,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:54,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:54,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:54,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:54,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:54,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:54,184 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:32:54,185 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:32:54,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:54,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:54,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:54,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:54,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:54,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:54,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:54,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:54,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:54,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:54,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:54,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:54,188 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:32:54,188 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:32:54,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:54,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:54,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:32:54,189 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-10-20 00:32:54,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:54,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:54,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:54,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:54,432 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:54,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-10-20 00:32:54,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7130d32d6/d6fb306d2f6743c9b259dbc570b64692/FLAG023370f9f [2020-10-20 00:32:55,036 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:55,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-10-20 00:32:55,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7130d32d6/d6fb306d2f6743c9b259dbc570b64692/FLAG023370f9f [2020-10-20 00:32:55,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7130d32d6/d6fb306d2f6743c9b259dbc570b64692 [2020-10-20 00:32:55,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:55,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:55,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:55,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:55,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:55,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:55" (1/1) ... [2020-10-20 00:32:55,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e40ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55, skipping insertion in model container [2020-10-20 00:32:55,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:55" (1/1) ... [2020-10-20 00:32:55,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:55,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:55,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:55,586 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:55,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:55,675 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:55,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55 WrapperNode [2020-10-20 00:32:55,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:55,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:55,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:55,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:55,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55" (1/1) ... [2020-10-20 00:32:55,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55" (1/1) ... [2020-10-20 00:32:55,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:55,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:55,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:55,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:55,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55" (1/1) ... [2020-10-20 00:32:55,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55" (1/1) ... [2020-10-20 00:32:55,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55" (1/1) ... [2020-10-20 00:32:55,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55" (1/1) ... [2020-10-20 00:32:55,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55" (1/1) ... [2020-10-20 00:32:55,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55" (1/1) ... [2020-10-20 00:32:55,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55" (1/1) ... [2020-10-20 00:32:55,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:55,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:55,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:55,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:55,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:32:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:32:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:32:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:32:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:55,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:32:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:56,424 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:56,425 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:32:56,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:56 BoogieIcfgContainer [2020-10-20 00:32:56,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:56,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:56,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:56,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:56,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:55" (1/3) ... [2020-10-20 00:32:56,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618a0976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:56, skipping insertion in model container [2020-10-20 00:32:56,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:55" (2/3) ... [2020-10-20 00:32:56,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618a0976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:56, skipping insertion in model container [2020-10-20 00:32:56,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:56" (3/3) ... [2020-10-20 00:32:56,435 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-10-20 00:32:56,447 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:56,455 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:56,465 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:56,487 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:56,487 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:56,487 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:56,488 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:56,488 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:56,488 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:56,489 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:56,489 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:56,502 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-20 00:32:56,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:32:56,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:56,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:56,508 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:56,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:56,522 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-10-20 00:32:56,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:56,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323272262] [2020-10-20 00:32:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:32:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:56,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:32:56,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:32:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:56,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:32:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:56,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323272262] [2020-10-20 00:32:56,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:56,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:32:56,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900238774] [2020-10-20 00:32:56,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:56,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:32:56,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:56,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:56,757 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-20 00:32:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:56,778 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-10-20 00:32:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:56,779 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-20 00:32:56,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:56,789 INFO L225 Difference]: With dead ends: 53 [2020-10-20 00:32:56,789 INFO L226 Difference]: Without dead ends: 24 [2020-10-20 00:32:56,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:56,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-20 00:32:56,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-20 00:32:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 00:32:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-20 00:32:56,827 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-10-20 00:32:56,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:56,828 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-20 00:32:56,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:56,828 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-20 00:32:56,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:32:56,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:56,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:57,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:32:57,044 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:57,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:57,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-10-20 00:32:57,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:57,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478619674] [2020-10-20 00:32:57,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:32:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:57,383 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:57,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:57,607 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:32:57,607 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:32:57,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:32:57,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:57 BoogieIcfgContainer [2020-10-20 00:32:57,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:57,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:57,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:57,849 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:57,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:56" (3/4) ... [2020-10-20 00:32:57,852 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:32:57,918 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:32:57,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:57,921 INFO L168 Benchmark]: Toolchain (without parser) took 2616.95 ms. Allocated memory was 43.0 MB in the beginning and 49.3 MB in the end (delta: 6.3 MB). Free memory was 23.6 MB in the beginning and 10.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:57,922 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 32.5 MB. Free memory is still 11.0 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:32:57,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.89 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 22.8 MB in the beginning and 22.8 MB in the end (delta: -58.0 kB). Peak memory consumption was 13.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:57,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.80 ms. Allocated memory is still 43.5 MB. Free memory was 22.8 MB in the beginning and 20.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:57,924 INFO L168 Benchmark]: Boogie Preprocessor took 40.19 ms. Allocated memory is still 43.5 MB. Free memory was 20.7 MB in the beginning and 18.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:57,925 INFO L168 Benchmark]: RCFGBuilder took 659.51 ms. Allocated memory was 43.5 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Free memory was 18.5 MB in the beginning and 15.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:57,926 INFO L168 Benchmark]: TraceAbstraction took 1420.16 ms. Allocated memory was 46.7 MB in the beginning and 49.3 MB in the end (delta: 2.6 MB). Free memory was 15.3 MB in the beginning and 13.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:57,927 INFO L168 Benchmark]: Witness Printer took 70.43 ms. Allocated memory is still 49.3 MB. Free memory was 13.2 MB in the beginning and 10.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:57,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 32.5 MB. Free memory is still 11.0 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 366.89 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 22.8 MB in the beginning and 22.8 MB in the end (delta: -58.0 kB). Peak memory consumption was 13.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 48.80 ms. Allocated memory is still 43.5 MB. Free memory was 22.8 MB in the beginning and 20.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 40.19 ms. Allocated memory is still 43.5 MB. Free memory was 20.7 MB in the beginning and 18.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 659.51 ms. Allocated memory was 43.5 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Free memory was 18.5 MB in the beginning and 15.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1420.16 ms. Allocated memory was 46.7 MB in the beginning and 49.3 MB in the end (delta: 2.6 MB). Free memory was 15.3 MB in the beginning and 13.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. * Witness Printer took 70.43 ms. Allocated memory is still 49.3 MB. Free memory was 13.2 MB in the beginning and 10.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...